Meandering Rivers.

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Presentation transcript:

Meandering Rivers

Meandering Rivers Constantly erode material - Cut bank Constantly deposit material - Point bar Change their channel course gradually Create floodplains wider than the channel Very Fertile soil Subjected to seasonal flooding

Formation of Meanders

Point bar deposits

Point Bar Deposits Point bar deposits grows laterally through time

Cut bank erosion Point bar deposits } Meander loop

Formation of an Oxbow

Meandering stream flowing from top of screen to bottom

Maximum deposition Maximum erosion

Meander scars Oxbow Lake Oxbow cuttoff

Things to Remember Rivers are part of a larger hydrologic system The have three main components: Drainage (Tributary) systems - collect water Transport Systems - move water along Alluvial fans, braided streams, meandering streams